spy
person engaged obtaining information that is considered secret or confidential
field agent
agent who works in the field, as opposed to one who works at the office or headquarters
atomic spy
profession
agent provocateur
person who commits or who acts to entice another person to commit an illegal or rash act
double agent
type of special intelligence service
resident spy
long-term spy in a foreign country
North Korean agents
Military intelligence of North Korea
intelligence analyst
military occupation
spymaster
leader of a spy ring
clandestine cell
organizing structure
intelligence officer
person employed by an organization to collect, compile and/or analyze information
sleeper agent
spy who is placed in a target country or organization to act as a potential asset if activated and not to undertake an immediate mission